Description

3,4-Dibromobenzenesulfonyl Chloride is a versatile and highly reactive organosulfur compound, primarily used as a key sulfonylation reagent and building block in advanced organic synthesis. Its value lies in its ability to introduce the sulfonyl chloride functional group into complex molecular architectures, enabling the creation of sulfonamides and sulfonate esters. This makes it an essential intermediate for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries, particularly for developing active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: A critical building block for synthesizing novel sulfonamide-based drug candidates, including enzyme inhibitors and receptor antagonists.
• Agrochemical Synthesis: Used in the production of advanced herbicides, fungicides, and pesticides where the sulfonyl moiety enhances biological activity.
• Dye and Pigment Manufacturing: Serves as a precursor for synthesizing sulfonated dyes and colorants with improved solubility and fastness properties.
• Polymer Chemistry: Employed to create functional monomers and cross-linking agents for specialty polymers, such as ion-exchange resins and high-performance materials.
• Chemical Research & Development: A valuable reagent in academic and industrial R&D labs for exploring new synthetic pathways and creating compound libraries.
• Ligand and Catalyst Preparation: Used to modify ligands and catalysts, introducing sulfonyl groups that can alter reactivity and selectivity in catalytic processes.

Basic Information

Product Name	3,4-Dibromobenzenesulfonyl Chloride
CAS No.	81903-80-2
Molecular Formula	C6H3Br2ClO2S
Molecular Weight	334.41 g/mol
Synonyms	3,4-Dibromobenzene-1-sulfonyl chloride; 1,2-Dibromo-4-sulfonylchloridobenzene; Benzenesulfonyl chloride, 3,4-dibromo-; 3,4-DBBSC; 3,4-Dibromophenylsulfonyl chloride
EINECS	Contact for details

Quality Control

Our 3,4-Dibromobenzenesulfonyl Chloride is manufactured under strict process controls to ensure batch-to-batch consistency and high purity. Quality is verified through a comprehensive suite of analytical techniques including HPLC, GC, and NMR spectroscopy. A Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place. Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent decomposition. Recommended storage temperature is 2-8°C for long-term stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Melting Point	Contact for details
Water Content (KF)	≤ 0.5%
Heavy Metals	≤ 20 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.